baber/WOPTO huggingface dataset:
Patent GB-869783-A (GB)
Title: Improvements in or relating to polarisation screens and filters for radio waves
Inventor: WIELOBOB MIECZYSLAW
IPC: H01Q15/12
Filed: 1959-04-15
Abstract: 869,783. Aerials. MARCONI'S WIRELESS TELEGRAPH CO. Ltd. Oct. 1, 1959 [April 15, 1959], No. 12876/59. Drawings to Specification. Class 40(7). A polarization screen comprises a plurality of unconnected resonant conductors arranged to re-radiate a field substantially equal to and 180 degrees out of phase with the field of undesired polarization running in the direction of the length of the conductors. The conductors are electrically #/2 long and spaced from one another by n #/2 and from the aperture of an aerial system by m #/4 where n is any integer and m is an odd integer. The aerial system described is a slotted waveguide and reflector or a slotted tower. Specification 827,083 is referred to.
Patent GB-1455233-A (GB)
Title: Polishing and grinding apparatus
IPC: B23Q27/00
Filed: 1975-03-27
Abstract: 1455233 Grinding and polishing lenses SOC CMV 27 March 1975 [29 Nov 1974] 12904/75 Heading B3D A device for grinding and polishing toroidal and spherical workpieces comprises a workpiececarrying spindle 20 and a tool-carrying spindle 22 which are arranged parallel and end-to-end to each other, a synchronization shaft 12 which is parallel to the spindles, motor means 10 for rotating the shaft; means 28, 38 for transmitting rotation of the shaft to both the spindles thereby to drive them synchronously with one another, an oscillatable arm 34 one end of which is mounted to oscillate on the shaft and the other end of which supports one of the spindles to cause oscillation thereof about the shaft, and means for oscillating the arm. The shaft 12 is driven by a belt 14 from a main motor 10 and the transmission means between the shaft 12 and spindles 20, 22 consists of notched belts 28, 38. The spindle 22 has a tool carrying device 24, 24, and the spindle 20 has a rocking device 46 having pins 48, 50 for engaging apertures in a workpiece support 44. The spindle 20 is mounted in one end of the arm 34 which is oscillatable about the shaft 36 by a connecting rod 52 driven by an eccentric 56 of a secondary motor 58. Mechanical, pnuematic or hydraulic means 60 applies axial pressure to the spindle 20 for pressing the workpiece against the tool. The oscillating arm may support the tool and the axial pressure may be applied to either one of the spindles.
Patent GB-450992-A (GB)
Title: Improvements in and relating to rotary fans
IPC: F04D29/34
Filed: 1935-05-01
Abstract: 450,992. Making screw fans. MATHER, C., 39A, Gordon Street, Lower Broughton, Salford, Lancashire. May 1, 1935, No. 12941. [Class 83 (ii)] [See also Group XXVI] Hollow fan blades 7 are placed over and secured to stems 6 which project from a central disc 5, the stems being twisted to give the required pitch to the blades. The stems may be cranked so as to off-set the fan blades from the central disc. The blades are of streamline form made by welding two shaped plates along three of their edges, the outer welded edge being of greater depth so as to permit cutting away as at 10 to reduce the blade length. The disc may consist of welded laminations.
Patent GB-1449210-A (GB)
Title: Electrical printed circuit connection panel
IPC: H05K1/00
Filed: 1974-03-22
Abstract: 1449210 Printed circuit assemblies COMPAGNIE HONEYWELL BULL 22 March 1974 [26 March 1973] 12959/74 Heading H1R An electrical connection panel 10 comprises connectors 11 into which printed circuit boards are plugged for connection between contact strips on opposite sides of the latter and contact seatings of the connectors 11 having shanks extending through metal lined holes T of panel 10. Connectors 11 are disposed in rows between 2 part fixing bars 14, 15 of the panel 10 flanged to grip the connector ends. Metal lined holes T are aligned in rows referenced R 0 , R 1 , R 2 , &c. and columns C 0 , C 1 , C 2 , &c. and are themselves referenced to columns and rows, e.g. T 1À3 , with the axes of the rows being referenced M 1 , M 2 , M 3 , &c. (Figs. 1, 2). The panel 10 (Figs. 3, 4) comprises two layers 17, 18 of printed conductors respectively referenced 17P, 17Q, 17R &c. and 18F, 18G, 18H, &c. separated by an insulant layer 19 and sandwiched between conductive plates 20, 21 over insulant layers 22, 23. The metal lined holes enable selected conductors in different layers to be interconnected or to be connected to external circuits over contacts whose shanks 13 are insertable into the holes, and, e.g. soldered. The holes may be isolated as required from the plates by cutting out surrounding metallic margins, e.g. 26, 27 of hole TO 1 2. Plates 20, 21 are connected to sources of logic voltage, e.g. +5 v., 0 v. and selectively interconnected with the printed circuit boards over contacts. The conductors of layers 17, 18 interconnect signals to or from the board printed circuits and are located between successive rows of metal lined holes, e.g. 17C between rows R 2 , R 3 . The conductors are split into sections extending between columns of metal lined holes C 1 , C 2 , C 3 , C 4 , &c. for 17 and C 0 , C 1 , C 2 , C 3 , &c. for 18 to suppress mutual crosstalk; neither conductor intersecting any metal lined hole along its path but being interconnected therewith as necessary by junction connectors J; e.g. hole T2.2 is connected to conductor 17B by J4 and hole T0.2 to 17B by J2 and to 18B by J3. Alternatively the conductors may be interconnected through the panel by selected metal lined holes. Circular depressions E are provided in the outer face of plate 20 designated by numerical references E1.0 to E4.1, &c., corresponding to the axis in which situated and the column to the right of the depression, and located between successive columns to alternately overly single sections of conductors 17 and 18. Thus to break connections in these conductor sections in course of setting up a required circuit, a drill 25 is inserted in each of the selected depressions and driven through the composite panel (Fig. 4). For isolation of, e.g. metal lined hole T2.3 from conductor 17C the latter is drilled at depressions E3.2 and E3.4, with restoration of connection between holes T1.2 and T4.3 by an external conductor. The several conductors may be deflected to clear the metal lined holes lying on their axes. Specification 1,449,209 is referred to.
Patent GB-863193-A (GB)
Title: Improvements in and relating to plants for the compound operation of free-piston gasturbines and boiler plants
IPC: F02B71/06
Filed: 1959-04-16
Abstract: 863,193. Gas turbine plant. STAMMINGER, W. April 16, 1959 [April 19, 1958], No. 12992/59. Class 110 (3). A power plant comprises the combination of gas turbine plant of the type supplied by a free piston gas generator, and a boiler, exhaust gases from the gas turbine being supplied to the furnace of the boiler as combustion-supporting medium. According to the invention a blower is provided taking its suction from a point in the duct connecting the gas turbine exhaust to atmosphere, so that if the amount of turbine exhaust gases are not sufficient for operation of the boiler furnace, additional air may be drawn in from the atmosphere through the turbine exhaust duct. Alternatively, if the turbine exhaust gases are in excess of that required by the furnace, the excess may be passed direct to atmosphere. The gas turbine 4 is supplied with combustion gases from the free piston gas generator 10 and the turbine exhaust gases may pass to atmosphere through the duct 28. Alternatively the exhaust gases may be drawn from the duct 28 through the duct 12 by means of a blower 13, the gases passing through duct 15-into the furnace of the boiler 17 where they constitute combustion supporting gases. If the supply of turbine exhaust gases is insufficient air may be drawn in from the atmosphere through duct 28, the mixture of turbine exhaust gases and atmospheric air passing through blower 13 to the boiler furnace. Similarly if the gas turbine is not in operation air may be drawn in through the duct 28 to supply the boiler furnace. The air or gases supplied by the blower 13 may be preheated by means of a steam-heated preheater 14, steam being supplied thereto through reducing valve 26 and discharged therefrom at 27.
Patent GB-1464081-A (GB)
Title: Safety device for  high-pressure chemical-reactors
IPC: B01J19/00
Filed: 1975-03-27
Abstract: 1464081 Bursting discs R J E PIERENS 27 March 1975 [27 March 1974] 12994/75 Heading F1D A busting disc, Fig. 4, comprises an annular portion 8 and a diaphragm portion 10 made from one piece of metal. As the diaphragm reverses under pressure, the diaphragm portion shears from the annular portion around the region 12. During manufacture blanks are pre-machined, heat-treated and the diaphragm portion is then finished to the required thickness for the particular application.
Patent GB-1183123-A (GB)
Title: A Model Vehicle Track System
Inventor: BOVILL CHARLES BARTON
IPC: A63H18/12
Filed: 1967-03-20
Abstract: 1,183,123. Model vehicle tracks. MINIMODELS TRI-ANG Ltd. 15 March, 1968 [20 March, 1967], No. 12995/67. Heading A6S. Model vehicle track systems comprise tracks having a series of spaced substantially parallel conducting strips, alternate strips being electrically connected together and vehicles having at least three electrical collectors which are such. that when a vehicle is facing along the track or at a small angle to it at least one collector engages a strip of one set whilst at least one other collector engages a strip of the other set: across alternate strips there is applied a manually controlled composite voltage incorporating a driving component and a superimposed pulsed steering component and the vehicles have control circuits to separate out the two components which are then used for their respective purposes. The driving component may be A.C., D.C. or pulsed D.C. If the track has two or more vehicles the steering components for different vehicles will have different frequencies. The vehicle may be steered by moving the front wheels by disc brakes contacting the left and right hand wheels or by a shaft from the front wheels driven by the main motor which has a wheel on the end which pivots and may contact either rear wheel to cause a braking effect.. The vehicle may be driven and steered by having two motors, one on each rear wheel, the relative speeds of which are controlled by the steering component of the composite voltage. The adhesion of the vehicle is improved if the strips are ferromagnetic and the collectors are magnetic. The track may have side barriers which may be resilient or electrically energised.
Patent GB-1424431-A (GB)
Title: Process and apparatus for drying porous material
IPC: F26B3/34
Filed: 1973-03-19
Abstract: 1424431 Microwave drying porous material KANEBO Ltd 19 March 1973 13013/73 Heading F4G Porous material is dried by an apparatus or a process wherein the material is charged into a closed drying chamber, drying air is blown on to the material and electromagnetic microwaves of very- or ultra-high frequency are directed on to the material. In Fig. 2, several porous articles 1 are hung inside the chamber, a motor driven fan 10 blowing air through a heat exchanger 11 and a punched plate or net 12 along the arrowed paths. A blower cooled magnetron oscillator 6 directs microwaves via a guide 7 into the chamber preferably at a later stage of. the drying process and has a drying capacity not more than that of the drying air. Fig. 3 shows porous material 17 fed continuously over rollers 21 through the chamber past drying air nozzles 20, microwaves being supplied at the exit end of the chamber as shown, or at the entrance end or at the middle thereof. A rotatable motor driven scattering plate 27, 28 at the entrance and exit prevent wave leakage. Intermittent movement of material through the chamber is provided in Fig. 5, a floor conveyer 41 carrying carriages 42a, 42b, 42c each carriage entering the chamber, then being moved forward successively to positions C, B, A and then leaving the chamber. Microwave radiation devices 45a, 45b, 45c have a plurality of openings 46a, 46b, 46c located in a distributor so that all of the material is exposed to the waves after the third position A. Each carriage has endless chains 97, Fig. 8, on either side driven by a motor via wheels 77, 86 to 96 and chains 85, and carrying hangers 98, 99 supporting articles 1 of the material the articles being continuously circulated inside the carriage during drying. The conveyer 41 is protected from microwave radiation by bottom plates in the carriages with shield plates extending downwardly therefrom. The conveyer 41 may be disposed in a gutter filled with water or other liquid to absorb the radiation. The material may be polyvinyl acetal, or polyvinyl formal.
Patent GB-1424214-A (GB)
Title: Method for manufacturing filter for removing cadmium and cadmium compounds from gas and particularly intended for cigarettes
IPC: B01D53/64
Filed: 1973-03-19
Abstract: 1424214 Tobacco smoke filter M J O SIREN 19 March 1973 [20 March 1972] 13046/ 73 Heading A2C [Also in Division Cl] A tobacco smoke filter for removing cadmium and cadmium compounds from gas streams comprises a gas permeable mass and a free powdery calcium salt substantially free from cadmium. The gas permeable mass may comprise cellulose or cellulose acetate. The calcium salt may be calcium sulphate, calcium phosphate or calcium carbonate and may be used in an amount of 1-75% 'by weight in the filter. It may be introduced into the permeable mass by suspension in a volatile organic solvent which suspension is introduced into the mass and the solvent allowed to evaporate. Alternatively it may be suspended in a stream of air which is passed through the permeable mass. The mass may contain between 5-8 per cent by weight of calcium salt.
Patent GB-102716-A (GB)
Title: Improved Pneumatic Tyre.
Inventor: HARDER PAULLI
IPC: B60C5/10
Filed: 1916-09-14
Abstract: 102,716. Harder, P. Dec. 10, 1915, [Convention date]. Air-tubes and chambers.-The outer cover 1, which may be of ordinary construction, is packed with hollow rubher bodies 5 formed with bosses 9, through which liquid ammonia or other substance is injected by means of a needle. On subsequent vulcanization, the chambers 5 become charged with highly-compressed gas, the supply of which may be augmented when the tyre is in use. To locate the bosses 9 for this latter purpose, the adjacent rubber may be of a distinguishing-colour. In a modification, the chambers 5 are formed with an open side, which is closed on vulcanization by the adjacent wall of the next chamber.
Patent GB-667458-A (GB)
Title: Improvements in float-operated electric relays
Inventor: FRIES EDUARD
IPC: G01F25/00
Filed: 1950-05-25
Abstract: 667,458. Actuation of switches; protective cut-out arrangements. MICAFIL AKT.-GES. May 25, 1950. No. 13137/50. Class 38 (v). Protective apparatus for electrical apparatus filled with insulating liquid and including a float 3 which falls and operates a switch 4 when gas is formed in the housing 2, may be tested by energizing an electromagnet 6 outside the housing and thereby attracting an armature 7 linked to the pivoted float. In the form shown the magnetic force acts through a non-magnetic plate 10 sealing the housing. In modifications, oil tightness is achieved by using a bellows to transmit the motion or by an oil tight cover round the magnet.
Patent GB-1272901-A (GB)
Title: Copper base alloy
IPC: C22C9/04
Filed: 1970-03-18
Abstract: 1,272,901. Copper base alloys. AMERICAN SMELTING & REFINING CO. March 18, 1970 [April 7, 1969], No.13150/70. Headings C7A and C7D. An alloy consists of in per cent by weight: Al 1-1À5 Mn 17-22 Zn 17-22 Cu 54-60 Pb 0À5-7 Alternatively the alloy may consist of: Al 1-1À5 Mn 17-22 Zn 17-22 Ni 3-6 Pb 0À5-7 Cu balance Cu + Ni 55-61 The alloys have good yield strength and ductility and a silvery appearance especially when polished. They are also machinable. The liquidus temperature may be below 1850‹C. The minimum tensile strength, yield strength and elongation may be respectively 60, 000 psi, 30, 000 psi and 20% in 2 inches. The alloy may be prepared by melting copper (with nickel where included), adding manganese, adding borax to remove surface oxide, and the zinc and then the aluminium in small pieces without stirring. The lead is added in solid or molten form after the molten alloy has been skimmed. A clay-graphite or silicon carbide crucible may be used.
Patent GB-132150-A (GB)
IPC: F16K17/20
Abstract: 132,150. Silvestre, N., and BlazÞre, F. Jan. 4, 1919. Thermally - actuated valves.-A thermal cutoff of the kind comprising a plug cock adapted to be closed by a spring when a catch is released by a contracting rod has the catch in the form of a ring or sleeve d slidable with slight friction on a projection c formed on the plug a. On opening the cock, the sleeve is moved by hand to engage the expanding rod e which as it expands pushes the sleeve back so that when it contracts the sleeve is releases and the cock closed by the spring b.
Patent GB-133509-A (GB)
IPC: F16K1/52
Abstract: 133,509. Young, E. C., and Austen, F. H. Nov. 8, 1918. Lift valves; stops, adjustable.-In screwactuated valves operated by a hollow threaded stem engaging a threaded spindle, an adjustable stop is mounted in or on the rotary member in order to limit the opening of the valve. In the arrangement shown, the stop is in the form of a screw l mounted in the hollow rotary nut member e and is adjusted by a screw-driver or by a key or spanner from above. The adjustment is secured against tampering by a screwed cap n. The valve member a is prevented from rotating by wings b engaging guides c. According to the Provisional Specification, when the valve is actuated by a rotary screwed spindle engaging a reciprocating non-rotary nut member, the adjustable stop consists of a screwed washer or nut mounted on the rotary spindle.
Patent GB-197957-A (GB)
Title: Improvements in wireless telephone receivers
IPC: H03F3/02
Filed: 1923-05-18
Abstract: 197,957. Soc. Franþaise Radio-Electrique. May 18, 1922, [Convention date]. Void (Published under Sect. 91 of the Act]. Thermionic amplifiers.-In a valve circuit arranged for power amplification of telephone currents in a wireless receiver, the input transformer 11, Fig. 2 has its primary or secondary coil shunted by a resistance 9, which tends to reduce the distortion caused by the flow of grid current during the positive half of the input alternations. An alternative, arrangement shown in Fig. 3, comprises two valves or valve sets, the grids being excited in opposite phase by being connected to opposite ends 7, 7<1> of the transformer secondary, the mid-point of which is connected to the filaments. The output transformer is similarly divided into two primary coils 12, 12<1>, which produce an additive effect in the secondary circuit 10. Several such stages of amplification may be employed, and the output current may operate a number of moving-coil instruments with large diaphragms.
Patent GB-914495-A (GB)
Title: Improvements in and relating to valves for fluid pressure systems
Inventor: SENIOR WILLIAM JAMES
IPC: F15B13/02
Filed: 1960-04-14
Abstract: 914,495. Valves. AUTOMOTIVE PRODUCTS CO. Ltd. March 14, 1961 [April 14, 1960], No. 13488/60. Class 135. The fluid entering the inlet 6 of a valve body 3 is divided into equal flows at outlets 13, 14 by a plunger-type movable valve member 1 and is directed to opposite ends of the valve member by a valve 19 operable to change the flow from either outlet to one or the other end of the valve member. Fluid flows from the inlet 6 to two outlets 13, 14 by way of peripheral grooves 15, 16 in the valve member 1, the spaces 4, 5 at the ends of which are, respectively, connected to the grooves 16, 15. When fluid flows from the outlets to the inlet, however, the connections between the spaces and grooves are interchanged by the valve 19 which is pushed to the left by a spring 20 when the pressure in bore 18 falls due to the connection of inlet 6 to exhaust. The valve member 1 thus regulates the two flows whether they are entering or leaving the valve.
Patent GB-570445-A (GB)
Title: Improvements in concrete building units and in structures composed thereof
IPC: E04C2/06
Filed: 1943-08-19
Abstract: 570,445. Concrete buildings, units. ARMSTRONG, J. C. Aug. 19, 1943, No. 13514. [Classes 20 (iv) and 87 (i)] A concrete unit for use in the construction of the floors, roof and walls of a building, is of channel section and is provided with groups of reinforcing rods 13, 13A, 14, 14A, arranged in mutually transverse groups, pairs 13A, 14A of such rods crossing one another closely around bolt holes 15 adapted, to receive bolts for securing adjacent units together. In the construction shown the longitudinal, rods 13A are arranged in pairs in the rods 11 and form with the four pairs of transverse rods 14A small rectangles in which the bolt holes 15 are located. The units are made in lengths and half lengths and are so assembled in forming a wall, for example, that the joins between the ends of the units in one row are remote from those in the two adjacent rows. Insulating or other material, such as wood straps, may be arranged between the flanges of the units of adjacent rows. As shown in the floor construction, Fig. 5, wood straps 19, 20, between adjacent rows provide securing means for the boarding of a floor 18. In the construction of a roof the rods of the units are uppermost to provide a continuous surface for a covering layer of cement, while the straps 19, 20 between the downwardly projecting flanges have secured to them the plaster boards of the ceiling below.
Patent GB-103788-A (GB)
Title: Improvements in Valves.
IPC: F16K15/06
Filed: 1916-09-23
Abstract: 103.788. Daimler Co., and Berriman, A. E. Sept. 23, 1916. Check lift valves; electrically-actuated valves.- Relates to non-return valves in which the seat and valve are of magnetic metal, one being permanently magnetized to bring and normally hold the valve to its seat. In the arrangement .shown, the valve casing is in two parts 3, 6 enclosing a flat disk valve 1, and is clamped together by a compound screw union 10, 11. Oblique passages 7 are formed round the valve-pin guide. The part 6 is of non- magnetic metal, such as bronze.
Patent GB-135322-A (GB)
IPC: B02C17/10
Abstract: 135,322. Wake, J. F. Nov. 29, 1918. Roller-and-ring mills.-A easing d fixed on a rotatable shaft g contains one or more loose grinding-rings c of varying diameter encircling the shaft. The rings are disposed one within another and may be cylindrical or of tapered form, as shown. The material is fed to the mill from a hopper a by a worm b, and the casing d is provided on the opposite side with a grating h. According to the Provisional Specification, rotation may be obtained by means of a segmental spur-wheel bolted to the casing and driven by a pinion, or the casing may be slung in chains from a shaft having sprocket-wheels, the chains engaging with segmental sprockets on the casing. In addition to the rings, a solid cylinder may be employed.